Withdrawal
Connecting rod cap
1. For subsequent installation, lay out the liners in the order corresponding to the location of the connecting rods (according to cylinder numbers).
2. Turn away a nut of fastening of covers of the lower heads of rods then remove covers and loose leaves.
3. Move the pistons with connecting rods to the top of the cylinders.
Piston ring removal and installation procedure
1. Using special tools (09234-33001), disconnect and reconnect the piston and connecting rod.
2. Install the appropriate insert in the attachment fork. Position the insert between the connecting rod and piston.
3. Insert the appropriate removable device into the hole in the fixture's bow.
Warning. Center the piston, connecting rod, and piston pin assembly relative to the mandrel of the puller.
4. Press the piston pin out of the top end of the connecting rod.
5. Install the correct guide pin into the piston and connecting rod. Insert the guide pin by hand into the piston bore to hold it in place. Push out the piston pin from the other side of the piston.
Warning. The guide pin centers the connecting rod in the piston. When the piston, connecting rod, piston and guide pins are installed on the fixture yoke, the guide pin centers the entire assembly in the fixture. If a guide pin that is too small is used, the piston assembly will not center in the tool, which could damage the yoke or tool insert.
6. Install the piston assembly on the tool yoke. The tool will support the connecting rod on the piston pin. Make sure the piston assembly slides on the yoke until the guide pin contacts the insert.
7. Adjust the setting mandrel to the appropriate length by turning the numbered sleeve on the lettered shaft until the alphanumeric value specified in the application diagram is obtained. Turn the knurled nut to lock the numbered bushing onto the shaft.
8. Insert the installation mandrel into the hole in the fixture arc. Press the piston pin into the connecting rod head until the adjusting mandrel bushing touches the top of the fixture arc.
Warning. Do not apply a load of more than 2200 kgf when the mounting mandrel bush rests in the arc.
Installation
1. Install spacer ring.
2. Install the top side ring. To install this ring, insert one end of it between the wall of the piston ring groove and the spacer ring, press it to the bottom of the groove and, pressing with your finger, as shown in the figure, insert the upper side ring into the groove.
Warning. When installing side rings, do not use a piston ring expander
3. Install the bottom side ring in the same way.
4. Using a piston ring expander, install the No. 2 piston ring.
5. Install piston ring No. 1.
6. Apply engine oil to the outer surfaces of the piston and piston rings.
7. Position the piston rings so that the gaps in the locks of adjacent piston rings are spaced as far apart as possible. Make sure these gaps are not in the plane of the piston pin axis and load bearing.
8. When installing the piston in the cylinder, press the piston rings into the piston grooves with a swage.
9. Make sure that the mark indicating the front of the piston and the mark indicating the front of the connecting rod (identification label) directed towards the front of the engine.
10. When installing the connecting rod cap, make sure that the marks corresponding to the cylinder number on the connecting rod and cap match.
11. When installing a new connecting rod, make sure that the cutouts for holding the liners are located on one side.
- Tightening torque: Nuts for fastening the cover of the lower head of the connecting rod - 50-52 Nm.
12. Tighten the connecting rod cap nuts.
13. Check the gap of the liners, for which:
- 1) Remove oil and dirt from bearings and necks.
- 2) Cut a piece of plastic template to a length equal to the width of the liner and place it along the axis of the neck away from the oil holes.
- 3) Install the bushings and cover and tighten them to the required torque. Do not turn the crankshaft while performing this operation.
- 4) Remove the bearing caps and, using the scale printed on the bearing, measure the thickness at the widest point.
- Connecting rod cap: Bearing clearance - 0.02-0.05 mm.
14. Check up a backlash of a rod.